Acetylene-torch.



C. JOHNSON.

ACETYLENE TORCH.

APPLICATION FILED MAY 2, 1912.

Patented July 20, 1915.

a SHEETSSHEET 1.

feasw;

C. JOHNSON.

ACETYLENE TORCH.

APPLICATION FILED MAYZ, 1912.

19 mggg Patented July 20, 1915.

3 SHEETS-SHEET 2.

c. JOHNSON ACETYLENE TORCH. APPLICATION FILED MAY 2, 1912.

Patented. July 20, 1915.

3 SHEET$-SHEET 3.

n m n a 1 m v Z w I11 ll U m v ing to a cutting torch.

nutrienchurch.

CARI: JOHNSQH, OF CHICAGO, ELLE H.018.

ACETYLENE-TURCl-I.

menace. I

Specification of Letters Patent. Pwtgntmd ugly 2Q), 1915 A pplication filed May-2,1912; Serial lIo. 694,706.

To all whom it may concern: Be it known that I, Carr. Jonnson, a citi- -zen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and use- ,ful Improvements n Acetylene'iorches, of which the following 15 a specincatlon.

This invention relates to improvements in acetylene torches. r

The principal ob ect of this inv in welding or in cutting metals Another object of this invention is to provide an improved construction Wherebythe device may be readily changed from Weld to provide an improved torch for use either Another object of the invention is to provide an improved.construction of filtering chamber.

Other objects will be made clear n the following specification taken in connection with the accompanying drawingsfln which Figure 1 is a side elevation of my device asused f m' Welding. Fig. 2 is a longitudi nal'section of the Welding burner and head. Fig. 3 is a section taken at right angles to the section ofFig. 2. Fig. 4k is a transverse section taken alongqthe line k4 of Fig.

Fig. 5 is a transverse section taken along the line 5-5 of Fig. 2. Fig. 6 is a side elevation of my device when used as a cutting torch. Fig. 7 is a longitudinal section through the burner attachment shown in Fig: 6. Fig. 8 is a section taken at right angles to that of Fig. 7. Fig. 9 is a section through the improved filtering device.. Fig. 10 is an end view of the head of the filtering device.

' Fig. 11 is a transverse section taken on the line 1111 of Fig. 9. Fig. 12 is a similar view along the line 1212 of Fig. 9; and

Fig. 13 is a side elevation of the form of valve used in connection with my device.

Like numerals refer to like elements throughout the drawings;

In the use of my device I contemplate using separate supplies of acetylene gasand oxygen gas, as is customary, but I have not considered 11'. necessary to show the tanks,

. etc, containing these gases. The tubev 20 is adapted tobe connected to a source of v oxygen supply, the passage of gas through this tuba-being regulated by the valve 21.

A .similar tube 22 is adapted to be connected toa source of acetylene gas, the how through which is also controlled by a valve 23, similar to the valve 21. These tubes communicats with a head 24, shown in enlarged View in Fig. 10. At its upper portion the head is provided with an aperture or socket 25, through which is inserted the end of the tube .20. Communicating with this tube,

through a socket 25, is the. acetylene pipe 26.

At the lower portion of the head a socket.

2? is provided, terminating in an aperture 28, which communicates with the interlor of the chamber 29; and at one side of said head is provided-a circular or annular flange 30,

on which is seated a cylinder or tube. 31. At the opposite end of this tube 31 is a reduced portion. 32, this reduced, portion. and the main body of the tube 31 forming ashoulder A second tube or cylinder 34: closely ts the reducedportion- 32 and abuts at its extremity against the shoulder 33 to form an air-tight connection. At the opposite end of the tube'34 is a cap 35 of peculiar construction. This cap is formed with an an- 'nular flange 86, onwhich is closely fitted one end of the tube 34, as shoivn in Fig. 9.

The shoulder 35 formed on theflange 35- eliininates the movement of and-furnishes a seat for the end of the tilbe 3 The cap is also provided with a central aperture 36' extending therethrough.

Secured to the Outer portion of the cap' and extending upwardly therefrom is a boss end, which projects into the tube 34. The en otkthe rod 88 projects into theend oii the tube 39 at 40, and is securely brazed orihtherf Wise fastened thereto. A. conical screenTflf is carried iiiteriorly of the tube 3% adjacent the cap.

The tube 39 is provided with plurality of-apertures 42 adjacent its end andunde'n" neath the screen, this tube being exteriorly' threaded, as shown at 43, and adapted to, be

engaged by an internally threaded split nut 44, shown in Fig. 12. This split nut is pro-- vided with hexagonal collar45- and an internally projecting portion 46, which 'coact with and closely fit the recessed portion all of the cap.

The interior of the tubes 31 and 3t is,

adapted to be filled with mineral wool or other filtrant, the conical screen serving to keep the filtrant clear of the apertures 42.

It will be seen that by placing together the sections of the split nut ll and engaging their interiorly threaded portion with the portion 43, said nut in its entirety may be threaded into engagement with the cap 35, when it will, through the medium of said cap and the rod 38, serve to retain the sections of the filtering chamber in closely assembled relation. It will also be seen that acetylene gas admitted through the aperture 28 in the head will of necessity have to pass through the mine :11 wool or other filtrant, through the screen 41 and intothe apertures 42, and hence through the acetylene tube. 39, which is secured at its other extremity to an elbow48, angularly projecting from an in tegrally formed main head 49. similar elbow 50, parallel with 18 and located upwardly thereof, furnishes a connection for the extremity of the oxygen pipe, to which it may be secured by the coupling nut 51, as shown in Fig. 1. The locking nut 48' serves to hold the end of the/pipe 39 in position with respect to the elbow -t8,as shown in Fig. 1the end of said pipe being threaded into the elbow, as shown in Fig. 2.

Leadingtrom the pipe 26, formed in the elbow 50 and main head 49, is a duct 52. The elbow d8 is similarly provided with a duct 53, from which lead bifurcated ducts 54. The main head 49 is provided in its lower portion with a threaded llange 55. At this extremity of the head 1s formed the annular channel 56 surrounding a centrally projecting boss 57, through which is formed the duct 52. The l )iturcated ducts 5-1: communicate with the annular channel 56 on either side of the projection 57, as shown in Fig. 3 of ,the drawings.

lVhen used for welding, a cap 58, internally threaded at 59 to engage the threaded flange 55, is provided. This cap is provided with an annular groove 60 adapted to register with the lower portion of the' channel 56, as shown in Fig. 2. Leading from this groove a re a plurality of passages 61, as shown in Fig. 2, these passages terminating in a mixing chamber (33. A centrally located projection (34 formed by the annular groove (50 in the cap 58, and through this projection is formed a central. passage (35 leading from the duct 52 to the mixing chamber. The cap 58 is internally apertured and threaded at its lower portion and is engaged by the. threaded portion (36 oi: the burner (36. I

It will be seen in this construction that oxygen conveyed through the pipe 26 will pass through the duct 52 in the main hea to the mixing chan'iber, and will be mix therein with the acetylene gas conveyed through the pipe 39, ducts o l, channel and passages (31. This provides a construc tion capable of use for welding where a single flame of mixed acetylene and oxygen is used. \Vhere it is intended to use a metal cutting torch, however, I provide a slightly dili'erent structure, as shown in Figs. 6,7, 8, and J. In place of the cap 58, shown in Fig. 2, 1 substitute a cap 70, internally threaded at T0 to engage the threaded portion 59 of the main head 49. An annular groove ll registers with the annular channel 56 in the head 49 and forms a central projection T 2 abutting against the extremity of the boss 5? of the head 49/ Leading from the groove in the cap are aplurality of apertures 73 leading to a mixing chamber 74. A central aperture 5, formed in the centrally located projection 72, is adapted to lead from the duct 52 to the mixing chamber 'M. The cap is provided. with a depending boss portion 76 externally threaded and engaged by the internally threaded portionof thecoupling nut 77, which is provided with an internally project ing flange 78' adjacent its lower extremity. A union member 79 is provided with an upwardly-projecting portion 79, in which is located the passage 80 and the downwardly projecting portion '79 in which are located the bifurcated ducts 81. The portion 79" closely fits and projects upwardly into the central aperture 76 formed in the portion 76' ot' the cap 70. The union'memher T9 is provided with a circular flange 82, seated in the seat formed by the flange T8 of the conpling end 77. A. packing washer 83 is carried on the upper face of the flange 82. This washer is adapted to abut against the lower face of the portion 76 of the member 70.

It will be seen that by means of the threaded engagement between the members 77 and 70, the member 70 may be utilized to hold the union 79 in close assembled lation with the cap 70, the washer 83 fun nishing a gas-tight connection therewith.

The depending portion 78" of the member 79 is externally threaded and is engaged by a burner; head 85, as shown in Fig. 7. This burner head is provided with a pair of hifurcated ducts 86, adapted to register and communicate with the bifurcated ducts 81. The burner head is provided with diverging faces H5 located on either side of the central face 85', as shown in Fig 7. SQCltGtS are provided in the burner head inwardly ol the faces 85. These sockets are threaded and are engaged by the threaded portions of the burners 88 the axes thereof extending outwardly at right angles to the faces 55% adjacent their connection with the hurne head. These burners are curved. adjacent memos their central portions so as to caiise their communicating at one end with the duct 93- formed in the burner head 85, as shown in 7 and 8. At its other extremity the duct 92 is reduced to form a portion 92.

The burner head is provided with anangularlv disposed elbow 95%, to which a second .11 pipe may be connected by means the union nut '96, as shown in Fig. 8. pipe is provided with valve 97, and .p'ted to beconnected to the source of 7 en supply. To provide for the support of the pipe 95, a pin 98 is detachably seated an aperture 99 in the lower portion of lead 2 as shown in Fig. 1. A screw 100 readedly wound in thelower portion 01" head and is adapted to hold the pin 98 p ace. This pin provided at its outer anity with a collar 98 adapted to permit or the location therein of the pipe 95, as shown inliigs, 6 and of the drawings. itv 1 thus be seen that in this second con-- struction a siiapply of gas and acetylene are comm ed in the mixing chamber 74 and COZlLLUQLfiQ. through the ducts 88 in the curved burners 88, while a supply of pure is conveyed through the pipe 95 to thrrmpii the cutting tip 30, the ends of burners S8 and cutting tip 90 being an to terminate adjacent each other, as '7. This a rangement gives TlESllfQ-(l for cutting inetal.

"l l have illustrated a form. of in connectioii with the e of gases. This valve 'ave designated generally the numeral The oilset ages 101 and 102 are l dotted lines, a vertical passage 103 mg them. A needle valve 104 is iacent the connection of the paswitli the '-':-assage 181. By rotating valve her d o the flow of from the e 101 to passage 1.02 may be readily desired,

- fit believed that the operation of the icvicc is sui'licienty set forth in the .c'fication.

, that whiiei have shown my ribs-d. the some specifically, i do a no i'r-stricteifl to either the showthe above description, beyond the ope of the appended claims.

It will be under in a more or less specific form and pipe, a head in Which'each of said pipes terminates, said-head being provided with"- a duct communicating with the oxygen pipe, and .a second ductcommunicating with the acetylene pipe, said second duct being bifurcated to form a pair of ducts located one on each side of the firstnamed duct.

2. In a. device of the classdescribed, an, oxygen supply pipe and an acetylene supply pipe, a head in which each of said pipes terminates, said head being provided'with a duct communicating with. the oxygen pipe and a second duct communicating with, the acetylene pipe, said second duct being bifurcated to form a pair of-ducts located one on each side of the first named duct, said head being provided with an'annular cham ber located adjacent one extremity, the" branches of said bifurcated ducts terminating at their ends opposite said second named duct in said chamber and the first named duct 5 projecting through the projection formed by the annula-r chamber.

3. In a device of the class described, an.

oxygen supply pipe and an acetylene supply pipe, a head in which each of said pipes ter ininates, said head being duct communicating-with the oxygen pipe,

a second duct communicating with the acetylene pipe,-said second duct being bifur-' cated to form a pair of ducts located one on each side of the first named duct, said-head.

being provided with. an annular chamber loprovided with a.

duct communicating with the oxygen pipe,

a second duct communicating; with the acetylene pipe, said second duct being b furcated to form a pair oi? ductslocated one on each side of the first named duct, said head. being provided with an annular chamber located adjacent one extremity and the branches of said bifurcated ducts terminating in 'said chamber, the first named duct projecting through the projectii 11 formed by the annular chamber, a cap 'dctachably secured to the chambered being provided with. a mixing chamber, said cap being finrther n'ovided'with a passage coinniin'iicating 'ith the oxygen duct and with a y ilurality of passages cpmniunicating with said annular chamber in said head, and a burner member detaohably secured to said extremity oi? said head, said cap cap and communicating with said mixing chamber.

\ In a device of the class described, a head, an acetylene supply pipe and an oXy gen pipe communicating with said head, said head being provided with ducts leading from said pipes, a cap detachably secured to said head, said cap having a mixing chamber and being provided with passagesleading from said ducts in said head to said mixing chamber, a coupling member, means to secure said coupling member to said cap, said coupling member being provided with a bifurcated duct leading from said, mixing chamber, a pair of burners detachably secured to said coupling member, and having passages communicating with the branches of said bifurcated duct in said coupling member, and a third centrally located cutting tip carried by said coupling member, said cutting tip having its extremity terminating adjacent the extremities of said first named burners, and an oxygen supply pipe comnmnicating with said cutting tip.

6. In a device of the class described, a head, a cap detachably engaging said head, a coupling member engaging said cap, and a burner head detaehably engaging said coupling member with a plurality of burners detachabl y secured in said burner head, said in y 11211118.

burners having their free extremities converging toward, and terminating adjacent each other.

7 In a. device of the class described, a cap having a mixing chamber therein, a burner head, means to secure said burner head to saidcap, a pair of angular burners detachably secured to said burner head, and a cutting tip arranged between said first named burners, said angular burners being arranged to communicate with said mixing" chamber, said cutting tip being arranged to communicate with a separate source of 8.-In a device of the class described, a head having an annular chamber in one end thereof and a plurality of ducts leading to said chamber, a cap carried by said head and having an annular groove in one end thereof adapted to register with said annular chamber in said head, said cap having a mixing chamber in the other end thereof, said cap being further provided with. passages leading trom said annular groove to said mixing chamber.- 7

In testimony whereof, I have subscribed.

Cililili JOHNSON lVitnesses:

HENRY A, PARKS,

F. A. FLonnLL. 

